radiographic recognition of dental implants as an aid to identifying the deceased nattawut rodchom...
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Radiographic Recognition of
Dental Implants as an Aid to
Identifying the Deceased
Nattawut Rodchom
No 51312310
Radiographic Recognition of
Dental Implants as an Aid to
Identifying the Deceased
Dental Implant
1.Fixture 2.Abutment 3.Crown
Radiographic
review 1992 Sewerin = indentified the influence of various features of implant
2006 Michelinakis = developed computer software to assist in the indentification of implant
Material and Methods
Implant type Radiograph film = Nikon 2000 camera (Tokyo,Japan) Type of radiograph = mouth 200 radiograph images
Material and Methods Implant Recognition System (IRS)
inter-examiner / intra-examiner
The McNemar’s test
Result
TABLE 1—Summary of the number of correct implant tttttttttttttttttttttttttt tttttt tt tttt tttttttttt.
Examiner 1 Examiner 2 111 555 7First assessment without IRS ( . %)
7385 119( 5 9.5%) 80 (40%) 1 3 1 6 5 5 86
43( %) 123 615 8Second assessment with IRS ( . %)
0 40( %)
2TABLE —McNemar’s tests results Test No . Test McNemar’s Statistic Freedom Pr > S
Significance1 EX1-IRS 2.0 1 0.16 NO 1st vs 2nd 2 EX1+IRS 3.6 1 0.06 NO 1st vs 2nd
3 EX2 –IRS 0.2 1 0.64 NO 1st vs 2nd
4 EX2 +IRS 1.1 1 0.30 NO 1st vs 2nd
5 EX1 –IRS+IRS 10.6 1 <0.0011 YES
Result 2TABLE —McNemar’s tests results
Test No . Test McNemar’s Statistic Freedom Pr > S Significance6 EX2-IRS+IRS 1.2 1 0.27
NO7 Total-IRS+IRS 9.0 1 <0.0027
YES8 -IRS EX1 VS EX2 36.25 1 <0.0001
YES9 +IRS EX1 VS EX2 58.7 1 <0.0001
YES10 Total EX1 VS EX2 92.9 1 <0.0001
YES
DISCUSSION
The sample of 200 implant images by Dentists and odontologists from 12 countries
22 manufacturers The most manufacturers Nobel-Biocare,Straumann,Branemark
DISCUSSION
Differentiation intraoral and extraoral radiographs
assessed in a single day Intra-Examiner = no significant Inter-Examiner = significant Implant Recognition System
( IRS )
conciusion
- Nonstandardized radiographs
- Prior knowledge of each examiner
- Modifications to the IRS
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